HM Digital COM-300L pH EC TDS Meter - Waterproof 5-in-1 Professional Tester drinking water testing Lead-Free: Yes

Lead-Free: Yes

gentle handling to avoid damaging the glass bulb or platinum tip

6 standard buffer choices and 2 point temperature calibration

and shielded sensor cables

The Milwaukee MW803 MAX Waterproof 4-in-1 Tester offers:

HM Digital COM-300L pH EC TDS Meter - Waterproof 5-in-1 Professional Tester drinking water testing Lead-Free: YesProfessional 5 in 1 Waterproof pH EC TDS Salinity Temperature Meter The HM Digital COM 300L is a professional grade waterproof combo meter that measures pH, Electrical Conductivity (EC), Total Dissolved Solids (TDS), Salinity, and Temperature in a single rugged instrument. With IP 67 waterproof rating, digital calibration, and replaceable probe technology, this meter delivers lab quality results for hydroponics, water treatment, aquaculture, pools,